Improved the "usage examples" section of the documentation (some of the examples were way too old), added some advices

fixed a bug when computing the amplitude with the "daily_avg" resampling algorithm. Very minor improvement to the MeteoData::merge method.

A new Date print format has been added (ISO_DAY). The "daily average" resampling now properly works with avg, avg+min or avg+max using the user provided range as a fallback.

Some code cleanup into the MeteoData::merge methods. A new method has been implemented to merge all stations close to each other within a single vector<MeteoData>. Practically: several data sets from the same location can then be read and merged on the fly by a call to MeteoData::merge(vec).

A new "NOISE" filter has been added, to add noise to the inputs. An improved check and error message has been implemented in FilterSuppr. An updated reference added to the ESOLIP generator.

It is now possible to only remove a specified fraction of a data set with the SUPPR filter (at random)

Added a range check on RH before computing the dew point temperature in the RH spatial interpolation method. Renammed and documented the ESOLIP precipitation generator after adding the reference.

fixed another bug reading files in a directory on Windows. I never thought this could be so tricky...

On some Windows versions, reading a directory was failing, simply reporting "could not open directory". This seems to have been dependent on the character encoding of the system. This has been solved by forcing the use of ANSI calls for the Win API.

Fixed a very stupid bug in Undercatch_WMO when dealing with 5 arguments (bad copy/paste). Thanks Matteo!

Cleaning up the CMake files from unecessary things, proper support for x86_64 (it needs to be named as "amd64" on Debian), a few extra options for the cpack generators.

Small tweaks for Windows: no version information in path anymore but in the name as it appears in "add/remove software"

The ALPUG plugin now uses a better way of validating the provided station_ids, by checking if at least one file matching the station ID can be found in the METEOPATH. If not, most probably the station ID is wrong. If yes, then some years are simply missing (and no error message or warning is generated). The silent skip of duplicates is now commented out in order to shame the owners of messed up data.

The warnings have been fixed. The ALPUG plugin now supports metadata (a specific file format has been designed for it), supports duplicates in the data files (since this seems to happen quite often) with either no reporting (for limited number of duplicates) and reporting a warning for the begining of a large duplicated block of data. The plugin also now handles better missing files: if some files have already been found for this station, a warning is printed out but the execution continues. If no single file was found for a given station, an exception is thrown. The documentation has also been written.

The DAILY_AVG temporal interpolation is now in order. It has been properly tested on avg/range and still needs testing on min/max or min/avg or max/avg.

A new plugin has been created to read the data from the ALPUG stations (ascii format). This is still a work in progress...

The DAILY_AVG interpolation now produces smooth interpolations. The code will be refactored later to be more modular and more compact.

A new temporal interpolation method has been introduced, to generate sinusoidal variations of a given mean and range. This is far from perfect (discontinuities between two days) but this is a start... 

Better plugin template, as mentioned in issue 411. Brief description of the scripts in tools/ in the examples readme.

The time range output of smet_range now shows the average sampling rate. The smet2kml script should now better custom SMET files having a larger than usual header (such as .sno files).

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The updated smet_range script now supports Julian timestamps (and converts them to ISO), properly shows empty lines for stations that miss the requested parameter and properly converts K to C when necessary. It also prints a usage message when ran without arguments and can take as argument a path.

The new smet2kml script creates a kml file locating all the smet stations provided in a given directory. This kml can then be loaded on map.geo.admin, googlemaps, etc and shows markers with station ids.

A new readDirectory() method has been implemented that directly returns a list of strings (slightly more convenient to use). An innacurracy has been fixed in IOUtils: lat_epsilon and lon_epsilon were defined in rad when they should have been in deg. The Coords::toString() method has been slightly improved by allowing more digits for lat/lon. The smet_extract.sh script can now provide a list of available fields if no field has been specified.

Some threshold were making trouble for very high resolution simulations with Winstral, they have been changed. A broken link has been fixed in NetCDFIO.

The Winstral interpolation was not behacing properly when dealing with a DEM with holes, this has been fixed. Otherwise, the grids initializations use some recently introduced API that makes the code easier to read.

An invalid C to K conversion was fixed (it used the water triple point temperature instead of melt/freeze). A much improved smet_extract that processes one file at a time has been committed. The config object now is much more verbose when reporting an invalid key and does not write out invalid key/values (basically, key with empty values). This makes it possible for example in Snowpack to re-run a simulation using the backed up ini file (without any changes).

Anselm koehler contributed these two Matlab scripts to read and plot SMET files, making use of all fields and metadata.